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Question

Difficulty: EasyPatch Management and Software Maintenance

Prior to installing a minor software patch on an enterprise edge router, a network engineer creates a backup of the current operating configuration and tests the update in an isolated environment. What is the primary purpose of performing these pre-deployment actions?

  1. To verify system stability and ensure a reliable rollback path if the patch causes unexpected issuesAnswer
  2. B
    To bypass the requirement for obtaining change advisory board approval prior to production installation
  3. C
    To automatically update dynamic routing table entries across adjacent autonomous systems
  4. D
    To permanently increase the hardware processing capacity and physical interface speed of the router

Answer

To verify system stability and ensure a reliable rollback path if the patch causes unexpected issues.
Performing lab testing and backing up baseline system configurations ensure that potential software bugs are discovered safely and that the device can be rapidly restored to its prior state if issues arise during maintenance.

Step-by-Step Solution

1
Identify the purpose of pre-deployment patch management activities
Recognize that configuration backups provide a recovery point and staging environments allow risk-free testing.
Applying unvalidated software updates directly to live systems risks downtime and operational disruption.
2
Evaluate the choices against best practices for network maintenance
Determining that backing up configurations and pre-testing updates directly supports risk mitigation and system recovery.
If an update corrupts device operational behavior, the saved backup and validated procedure enable immediate recovery.

Key Concept

Patch Staging and Baseline Backups
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Topics

Patch Management and Software Maintenance

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